Question

What role is played by aerobic and anaerobic bacteria's in waste water

treatment and write the use of sludge​

Answer 1

Answer:

Aerobic bacteria use oxygen, which is added mechanically, to break down wastewater contaminants, converting it into energy. ... As anaerobic bacteria break down sludge, they produce methane gas. This methane gas can be used as an alternative energy source, called biogas, to fuel the wastewater treatment process.